mptcp: drop argument port from mptcp_pm_announce_addr

Drop the redundant argument 'port' from mptcp_pm_announce_addr, use the
port field of another argument 'addr' instead.

Fixes: 0f5c9e3f

 ("mptcp: add port parameter for mptcp_pm_announce_addr")
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>